Home / 665,853.04-999,031.07-399,799.09

Finding the Fourth Proportional to 665,853.04, 999,031.07 and 399,799.09

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Solution

The fourth proportional to 665,853.04, 999,031.07 and 399,799.09 is: 599,849.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,853.04 : 999,031.07 = 399,799.09 : x
  2. Step 2: Convert to fraction form
    665,853.04/999,031.07 = 399,799.09/x
  3. Step 3: Cross multiply
    665,853.04x = 999,031.07 × 399,799.09
  4. Step 4: Simplify right side
    665,853.04x = 399,411,712,667.73
  5. Step 5: Solve for x
    x = 399,411,712,667.73/665,853.04
  6. Step 6: Final answer
    x = 599,849.65

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.